Salix integra (aka "dappled willow" in English) is a specie of willow native to China, Japan & Korea. The cultivar 'Hakuro Nishiki' (the one I have purchased & that you can see here) is grown for its variegated foliage, the leaves strongly mottled with patches & blotches of white and pale pink. For this reason, in French it is called "shrimp willow" ("saule crevette" en français).
How could I resist such a lovely foliage, seriously ?! I was very happy to bring it back home this past Monday !
Do you have a garden ? Have you planted a tree or flowers that you had never before ? I'd love to know !